Prepare for Unicode 6.2

This changes code to be able to handle Unicode 6.2, while continuing to
handle all prevrious releases.

The major change was a new definition of \X, which adds a property to
its calculation.  Unfortunately \X is hard-coded into regexec.c, and so
has to revised whenever there is a change of this magnitude in Unicode,
which fortunately isn't all that often.  I refactored the code in
mktables to make it easier next time there is a change like this one.

1 files changed, 13 insertions, 3 deletions

diff --git a/utf8.c b/utf8.c
index 8cc05c305b..4ba29d859b 100644
--- a/utf8.c
+++ b/utf8.c
@@ -2270,13 +2270,13 @@ Perl_is_utf8_X_prepend(pTHX_ const U8 *p)
 }
 
 bool
-Perl_is_utf8_X_non_hangul(pTHX_ const U8 *p)
+Perl_is_utf8_X_special_begin(pTHX_ const U8 *p)
 {
     dVAR;
 
-    PERL_ARGS_ASSERT_IS_UTF8_X_NON_HANGUL;
+    PERL_ARGS_ASSERT_IS_UTF8_X_SPECIAL_BEGIN;
 
-    return is_utf8_common(p, &PL_utf8_X_non_hangul, "_X_HST_Not_Applicable");
+    return is_utf8_common(p, &PL_utf8_X_special_begin, "_X_Special_Begin");
 }
 
 bool
@@ -2289,6 +2289,16 @@ Perl_is_utf8_X_L(pTHX_ const U8 *p)
     return is_utf8_common(p, &PL_utf8_X_L, "_X_GCB_L");
 }
 
+bool
+Perl_is_utf8_X_RI(pTHX_ const U8 *p)
+{
+    dVAR;
+
+    PERL_ARGS_ASSERT_IS_UTF8_X_RI;
+
+    return is_utf8_common(p, &PL_utf8_X_RI, "_X_RI");
+}
+
 /* These constants are for finding GCB=LV and GCB=LVT.  These are for the
  * pre-composed Hangul syllables, which are all in a contiguous block and
  * arranged there in such a way so as to facilitate alorithmic determination of